// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/mach-omap2/id.c
*
* OMAP2 CPU identification code
*
* Copyright (C) 2005 Nokia Corporation
* Written by Tony Lindgren <tony@atomide.com>
*
* Copyright (C) 2009-11 Texas Instruments
* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/random.h>
#include <linux/slab.h>
#ifdef CONFIG_SOC_BUS
#include <linux/sys_soc.h>
#endif
#include <asm /cputype.h>
#include "common.h"
#include "id.h"
#include "soc.h"
#include "control.h"
#define OMAP4_SILICON_TYPE_STANDARD 0 x01
#define OMAP4_SILICON_TYPE_PERFORMANCE 0 x02
#define OMAP_SOC_MAX_NAME_LENGTH 16
static unsigned int omap_revision;
static char soc_name[OMAP_SOC_MAX_NAME_LENGTH];
static char soc_rev[OMAP_SOC_MAX_NAME_LENGTH];
u32 omap_features;
unsigned int omap_rev(void )
{
return omap_revision;
}
EXPORT_SYMBOL(omap_rev);
int omap_type(void )
{
static u32 val = OMAP2_DEVICETYPE_MASK;
if (val < OMAP2_DEVICETYPE_MASK)
return val;
if (soc_is_omap24xx()) {
val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
} else if (soc_is_ti81xx()) {
val = omap_ctrl_readl(TI81XX_CONTROL_STATUS);
} else if (soc_is_am33xx() || soc_is_am43xx()) {
val = omap_ctrl_readl(AM33XX_CONTROL_STATUS);
} else if (soc_is_omap34xx()) {
val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
} else if (soc_is_omap44xx()) {
val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS);
} else if (soc_is_omap54xx() || soc_is_dra7xx()) {
val = omap_ctrl_readl(OMAP5XXX_CONTROL_STATUS);
val &= OMAP5_DEVICETYPE_MASK;
val >>= 6 ;
goto out;
} else {
pr_err("Cannot detect omap type!\n" );
goto out;
}
val &= OMAP2_DEVICETYPE_MASK;
val >>= 8 ;
out:
return val;
}
EXPORT_SYMBOL(omap_type);
/*----------------------------------------------------------------------------*/
#define OMAP_TAP_IDCODE 0 x0204
#define OMAP_TAP_DIE_ID_0 0 x0218
#define OMAP_TAP_DIE_ID_1 0 x021C
#define OMAP_TAP_DIE_ID_2 0 x0220
#define OMAP_TAP_DIE_ID_3 0 x0224
#define OMAP_TAP_DIE_ID_44XX_0 0 x0200
#define OMAP_TAP_DIE_ID_44XX_1 0 x0208
#define OMAP_TAP_DIE_ID_44XX_2 0 x020c
#define OMAP_TAP_DIE_ID_44XX_3 0 x0210
#define read_tap_reg(reg) readl_relaxed(tap_base + (reg))
struct omap_id {
u16 hawkeye; /* Silicon type (Hawkeye id) */
u8 dev; /* Device type from production_id reg */
u32 type; /* Combined type id copied to omap_revision */
};
/* Register values to detect the OMAP version */
static struct omap_id omap_ids[] __initdata = {
{ .hawkeye = 0 xb5d9, .dev = 0 x0, .type = 0 x24200024 },
{ .hawkeye = 0 xb5d9, .dev = 0 x1, .type = 0 x24201024 },
{ .hawkeye = 0 xb5d9, .dev = 0 x2, .type = 0 x24202024 },
{ .hawkeye = 0 xb5d9, .dev = 0 x4, .type = 0 x24220024 },
{ .hawkeye = 0 xb5d9, .dev = 0 x8, .type = 0 x24230024 },
{ .hawkeye = 0 xb68a, .dev = 0 x0, .type = 0 x24300024 },
};
static void __iomem *tap_base;
static u16 tap_prod_id;
static void omap_get_die_id(struct omap_die_id *odi)
{
if (soc_is_omap44xx() || soc_is_omap54xx() || soc_is_dra7xx()) {
odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_0);
odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_1);
odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_2);
odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_3);
return ;
}
odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1);
odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2);
odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3);
}
static int __init omap_feed_randpool(void )
{
struct omap_die_id odi;
/* Throw the die ID into the entropy pool at boot */
omap_get_die_id(&odi);
add_device_randomness(&odi, sizeof (odi));
return 0 ;
}
omap_device_initcall(omap_feed_randpool);
void __init omap2xxx_check_revision(void )
{
int i, j;
u32 idcode, prod_id;
u16 hawkeye;
u8 dev_type, rev;
struct omap_die_id odi;
idcode = read_tap_reg(OMAP_TAP_IDCODE);
prod_id = read_tap_reg(tap_prod_id);
hawkeye = (idcode >> 12 ) & 0 xffff;
rev = (idcode >> 28 ) & 0 x0f;
dev_type = (prod_id >> 16 ) & 0 x0f;
omap_get_die_id(&odi);
pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n" ,
idcode, rev, hawkeye, (idcode >> 1 ) & 0 x7ff);
pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n" , odi.id_0);
pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n" ,
odi.id_1, (odi.id_1 >> 28 ) & 0 xf);
pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n" , odi.id_2);
pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n" , odi.id_3);
pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n" ,
prod_id, dev_type);
/* Check hawkeye ids */
for (i = 0 ; i < ARRAY_SIZE(omap_ids); i++) {
if (hawkeye == omap_ids[i].hawkeye)
break ;
}
if (i == ARRAY_SIZE(omap_ids)) {
printk(KERN_ERR "Unknown OMAP CPU id\n" );
return ;
}
for (j = i; j < ARRAY_SIZE(omap_ids); j++) {
if (dev_type == omap_ids[j].dev)
break ;
}
if (j == ARRAY_SIZE(omap_ids)) {
pr_err("Unknown OMAP device type. Handling it as OMAP%04x\n" ,
omap_ids[i].type >> 16 );
j = i;
}
sprintf(soc_name, "OMAP%04x" , omap_rev() >> 16 );
sprintf(soc_rev, "ES%x" , (omap_rev() >> 12 ) & 0 xf);
pr_info("%s" , soc_name);
if ((omap_rev() >> 8 ) & 0 x0f)
pr_cont("%s" , soc_rev);
pr_cont("\n" );
}
#define OMAP3_SHOW_FEATURE(feat) \
if (omap3_has_ ## feat()) \
n += scnprintf(buf + n, sizeof (buf) - n, #feat " " );
static void __init omap3_cpuinfo(void )
{
const char *cpu_name;
char buf[64 ];
int n = 0 ;
memset(buf, 0 , sizeof (buf));
/*
* OMAP3430 and OMAP3530 are assumed to be same.
*
* OMAP3525, OMAP3515 and OMAP3503 can be detected only based
* on available features. Upon detection, update the CPU id
* and CPU class bits.
*/
if (soc_is_omap3630()) {
if (omap3_has_iva() && omap3_has_sgx()) {
cpu_name = (omap3_has_isp()) ? "OMAP3630/DM3730" : "OMAP3621" ;
} else if (omap3_has_iva()) {
cpu_name = "DM3725" ;
} else if (omap3_has_sgx()) {
cpu_name = "OMAP3615/AM3715" ;
} else {
cpu_name = (omap3_has_isp()) ? "AM3703" : "OMAP3611" ;
}
} else if (soc_is_am35xx()) {
cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505" ;
} else if (soc_is_ti816x()) {
cpu_name = "TI816X" ;
} else if (soc_is_am335x()) {
cpu_name = "AM335X" ;
} else if (soc_is_am437x()) {
cpu_name = "AM437x" ;
} else if (soc_is_ti814x()) {
cpu_name = "TI814X" ;
} else if (omap3_has_iva() && omap3_has_sgx()) {
/* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
cpu_name = "OMAP3430/3530" ;
} else if (omap3_has_iva()) {
cpu_name = "OMAP3525" ;
} else if (omap3_has_sgx()) {
cpu_name = "OMAP3515" ;
} else {
cpu_name = "OMAP3503" ;
}
scnprintf(soc_name, sizeof (soc_name), "%s" , cpu_name);
/* Print verbose information */
n += scnprintf(buf, sizeof (buf) - n, "%s %s (" , soc_name, soc_rev);
OMAP3_SHOW_FEATURE(l2cache);
OMAP3_SHOW_FEATURE(iva);
OMAP3_SHOW_FEATURE(sgx);
OMAP3_SHOW_FEATURE(neon);
OMAP3_SHOW_FEATURE(isp);
OMAP3_SHOW_FEATURE(192 mhz_clk);
if (*(buf + n - 1 ) == ' ' )
n--;
n += scnprintf(buf + n, sizeof (buf) - n, ")\n" );
pr_info("%s" , buf);
}
#define OMAP3_CHECK_FEATURE(status,feat) \
if (((status & OMAP3_ ## feat## _MASK) \
>> OMAP3_ ## feat## _SHIFT) != FEAT_ ## feat## _NONE) { \
omap_features |= OMAP3_HAS_ ## feat; \
}
void __init omap3xxx_check_features(void )
{
u32 status;
omap_features = 0 ;
status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS);
OMAP3_CHECK_FEATURE(status, L2CACHE);
OMAP3_CHECK_FEATURE(status, IVA);
OMAP3_CHECK_FEATURE(status, SGX);
OMAP3_CHECK_FEATURE(status, NEON);
OMAP3_CHECK_FEATURE(status, ISP);
if (soc_is_omap3630())
omap_features |= OMAP3_HAS_192MHZ_CLK;
if (soc_is_omap3430() || soc_is_omap3630())
omap_features |= OMAP3_HAS_IO_WAKEUP;
if (soc_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1 ||
omap_rev() == OMAP3430_REV_ES3_1_2)
omap_features |= OMAP3_HAS_IO_CHAIN_CTRL;
omap_features |= OMAP3_HAS_SDRC;
/*
* am35x fixups:
* - The am35x Chip ID register has bits 12, 7:5, and 3:2 marked as
* reserved and therefore return 0 when read. Unfortunately,
* OMAP3_CHECK_FEATURE() will interpret some of those zeroes to
* mean that a feature is present even though it isn't so clear
* the incorrectly set feature bits.
*/
if (soc_is_am35xx())
omap_features &= ~(OMAP3_HAS_IVA | OMAP3_HAS_ISP);
/*
* TODO: Get additional info (where applicable)
* e.g. Size of L2 cache.
*/
omap3_cpuinfo();
}
void __init omap4xxx_check_features(void )
{
u32 si_type;
si_type =
(read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1) >> 16 ) & 0 x03;
if (si_type == OMAP4_SILICON_TYPE_PERFORMANCE)
omap_features = OMAP4_HAS_PERF_SILICON;
}
void __init ti81xx_check_features(void )
{
omap_features = OMAP3_HAS_NEON;
omap3_cpuinfo();
}
void __init am33xx_check_features(void )
{
u32 status;
omap_features = OMAP3_HAS_NEON;
status = omap_ctrl_readl(AM33XX_DEV_FEATURE);
if (status & AM33XX_SGX_MASK)
omap_features |= OMAP3_HAS_SGX;
omap3_cpuinfo();
}
void __init omap3xxx_check_revision(void )
{
const char *cpu_rev;
u32 cpuid, idcode;
u16 hawkeye;
u8 rev;
/*
* We cannot access revision registers on ES1.0.
* If the processor type is Cortex-A8 and the revision is 0x0
* it means its Cortex r0p0 which is 3430 ES1.0.
*/
cpuid = read_cpuid_id();
if ((((cpuid >> 4 ) & 0 xfff) == 0 xc08) && ((cpuid & 0 xf) == 0 x0)) {
omap_revision = OMAP3430_REV_ES1_0;
cpu_rev = "1.0" ;
return ;
}
/*
* Detection for 34xx ES2.0 and above can be done with just
* hawkeye and rev. See TRM 1.5.2 Device Identification.
* Note that rev does not map directly to our defined processor
* revision numbers as ES1.0 uses value 0.
*/
idcode = read_tap_reg(OMAP_TAP_IDCODE);
hawkeye = (idcode >> 12 ) & 0 xffff;
rev = (idcode >> 28 ) & 0 xff;
switch (hawkeye) {
case 0 xb7ae:
/* Handle 34xx/35xx devices */
switch (rev) {
case 0 : /* Take care of early samples */
case 1 :
omap_revision = OMAP3430_REV_ES2_0;
cpu_rev = "2.0" ;
break ;
case 2 :
omap_revision = OMAP3430_REV_ES2_1;
cpu_rev = "2.1" ;
break ;
case 3 :
omap_revision = OMAP3430_REV_ES3_0;
cpu_rev = "3.0" ;
break ;
case 4 :
omap_revision = OMAP3430_REV_ES3_1;
cpu_rev = "3.1" ;
break ;
case 7 :
default :
/* Use the latest known revision as default */
omap_revision = OMAP3430_REV_ES3_1_2;
cpu_rev = "3.1.2" ;
}
break ;
case 0 xb868:
/*
* Handle OMAP/AM 3505/3517 devices
*
* Set the device to be OMAP3517 here. Actual device
* is identified later based on the features.
*/
switch (rev) {
case 0 :
omap_revision = AM35XX_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 1 :
default :
omap_revision = AM35XX_REV_ES1_1;
cpu_rev = "1.1" ;
}
break ;
case 0 xb891:
/* Handle 36xx devices */
switch (rev) {
case 0 : /* Take care of early samples */
omap_revision = OMAP3630_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 1 :
omap_revision = OMAP3630_REV_ES1_1;
cpu_rev = "1.1" ;
break ;
case 2 :
default :
omap_revision = OMAP3630_REV_ES1_2;
cpu_rev = "1.2" ;
}
break ;
case 0 xb81e:
switch (rev) {
case 0 :
omap_revision = TI8168_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 1 :
omap_revision = TI8168_REV_ES1_1;
cpu_rev = "1.1" ;
break ;
case 2 :
omap_revision = TI8168_REV_ES2_0;
cpu_rev = "2.0" ;
break ;
case 3 :
default :
omap_revision = TI8168_REV_ES2_1;
cpu_rev = "2.1" ;
}
break ;
case 0 xb944:
switch (rev) {
case 0 :
omap_revision = AM335X_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 1 :
omap_revision = AM335X_REV_ES2_0;
cpu_rev = "2.0" ;
break ;
case 2 :
default :
omap_revision = AM335X_REV_ES2_1;
cpu_rev = "2.1" ;
break ;
}
break ;
case 0 xb98c:
switch (rev) {
case 0 :
omap_revision = AM437X_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 1 :
omap_revision = AM437X_REV_ES1_1;
cpu_rev = "1.1" ;
break ;
case 2 :
default :
omap_revision = AM437X_REV_ES1_2;
cpu_rev = "1.2" ;
break ;
}
break ;
case 0 xb8f2:
case 0 xb968:
switch (rev) {
case 0 :
case 1 :
omap_revision = TI8148_REV_ES1_0;
cpu_rev = "1.0" ;
break ;
case 2 :
omap_revision = TI8148_REV_ES2_0;
cpu_rev = "2.0" ;
break ;
case 3 :
default :
omap_revision = TI8148_REV_ES2_1;
cpu_rev = "2.1" ;
break ;
}
break ;
default :
/* Unknown default to latest silicon rev as default */
omap_revision = OMAP3630_REV_ES1_2;
cpu_rev = "1.2" ;
pr_warn("Warning: unknown chip type: hawkeye %04x, assuming OMAP3630ES1.2\n" ,
hawkeye);
}
sprintf(soc_rev, "ES%s" , cpu_rev);
}
void __init omap4xxx_check_revision(void )
{
u32 idcode;
u16 hawkeye;
u8 rev;
/*
* The IC rev detection is done with hawkeye and rev.
* Note that rev does not map directly to defined processor
* revision numbers as ES1.0 uses value 0.
*/
idcode = read_tap_reg(OMAP_TAP_IDCODE);
hawkeye = (idcode >> 12 ) & 0 xffff;
rev = (idcode >> 28 ) & 0 xf;
/*
* Few initial 4430 ES2.0 samples IDCODE is same as ES1.0
* Use ARM register to detect the correct ES version
*/
if (!rev && (hawkeye != 0 xb94e) && (hawkeye != 0 xb975)) {
idcode = read_cpuid_id();
rev = (idcode & 0 xf) - 1 ;
}
switch (hawkeye) {
case 0 xb852:
switch (rev) {
case 0 :
omap_revision = OMAP4430_REV_ES1_0;
break ;
case 1 :
default :
omap_revision = OMAP4430_REV_ES2_0;
}
break ;
case 0 xb95c:
switch (rev) {
case 3 :
omap_revision = OMAP4430_REV_ES2_1;
break ;
case 4 :
omap_revision = OMAP4430_REV_ES2_2;
break ;
case 6 :
default :
omap_revision = OMAP4430_REV_ES2_3;
}
break ;
case 0 xb94e:
switch (rev) {
case 0 :
omap_revision = OMAP4460_REV_ES1_0;
break ;
case 2 :
default :
omap_revision = OMAP4460_REV_ES1_1;
break ;
}
break ;
case 0 xb975:
switch (rev) {
case 0 :
default :
omap_revision = OMAP4470_REV_ES1_0;
break ;
}
break ;
default :
/* Unknown default to latest silicon rev as default */
omap_revision = OMAP4430_REV_ES2_3;
}
sprintf(soc_name, "OMAP%04x" , omap_rev() >> 16 );
sprintf(soc_rev, "ES%d.%d" , (omap_rev() >> 12 ) & 0 xf,
(omap_rev() >> 8 ) & 0 xf);
pr_info("%s %s\n" , soc_name, soc_rev);
}
void __init omap5xxx_check_revision(void )
{
u32 idcode;
u16 hawkeye;
u8 rev;
idcode = read_tap_reg(OMAP_TAP_IDCODE);
hawkeye = (idcode >> 12 ) & 0 xffff;
rev = (idcode >> 28 ) & 0 xff;
switch (hawkeye) {
case 0 xb942:
switch (rev) {
case 0 :
/* No support for ES1.0 Test chip */
BUG();
case 1 :
default :
omap_revision = OMAP5430_REV_ES2_0;
}
break ;
case 0 xb998:
switch (rev) {
case 0 :
/* No support for ES1.0 Test chip */
BUG();
case 1 :
default :
omap_revision = OMAP5432_REV_ES2_0;
}
break ;
default :
/* Unknown default to latest silicon rev as default*/
omap_revision = OMAP5430_REV_ES2_0;
}
sprintf(soc_name, "OMAP%04x" , omap_rev() >> 16 );
sprintf(soc_rev, "ES%d.0" , (omap_rev() >> 12 ) & 0 xf);
pr_info("%s %s\n" , soc_name, soc_rev);
}
void __init dra7xxx_check_revision(void )
{
u32 idcode;
u16 hawkeye;
u8 rev, package;
struct omap_die_id odi;
omap_get_die_id(&odi);
package = (odi.id_2 >> 16 ) & 0 x3;
idcode = read_tap_reg(OMAP_TAP_IDCODE);
hawkeye = (idcode >> 12 ) & 0 xffff;
rev = (idcode >> 28 ) & 0 xff;
switch (hawkeye) {
case 0 xbb50:
switch (rev) {
case 0 :
default :
switch (package) {
case 0 x2:
omap_revision = DRA762_ABZ_REV_ES1_0;
break ;
case 0 x3:
omap_revision = DRA762_ACD_REV_ES1_0;
break ;
default :
omap_revision = DRA762_REV_ES1_0;
break ;
}
break ;
}
break ;
case 0 xb990:
switch (rev) {
case 0 :
omap_revision = DRA752_REV_ES1_0;
break ;
case 1 :
omap_revision = DRA752_REV_ES1_1;
break ;
case 2 :
default :
omap_revision = DRA752_REV_ES2_0;
break ;
}
break ;
case 0 xb9bc:
switch (rev) {
case 0 :
omap_revision = DRA722_REV_ES1_0;
break ;
case 1 :
omap_revision = DRA722_REV_ES2_0;
break ;
case 2 :
default :
omap_revision = DRA722_REV_ES2_1;
break ;
}
break ;
default :
/* Unknown default to latest silicon rev as default*/
pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%x)\n" ,
__func__, idcode, hawkeye, rev);
omap_revision = DRA752_REV_ES2_0;
}
sprintf(soc_name, "DRA%03x" , omap_rev() >> 16 );
sprintf(soc_rev, "ES%d.%d" , (omap_rev() >> 12 ) & 0 xf,
(omap_rev() >> 8 ) & 0 xf);
pr_info("%s %s\n" , soc_name, soc_rev);
}
/*
* Set up things for map_io and processor detection later on. Gets called
* pretty much first thing from board init. For multi-omap, this gets
* cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to
* detect the exact revision later on in omap2_detect_revision() once map_io
* is done.
*/
void __init omap2_set_globals_tap(u32 class , void __iomem *tap)
{
omap_revision = class ;
tap_base = tap;
/* XXX What is this intended to do? */
if (soc_is_omap34xx())
tap_prod_id = 0 x0210;
else
tap_prod_id = 0 x0208;
}
#ifdef CONFIG_SOC_BUS
static const char * const omap_types[] = {
[OMAP2_DEVICE_TYPE_TEST] = "TST" ,
[OMAP2_DEVICE_TYPE_EMU] = "EMU" ,
[OMAP2_DEVICE_TYPE_SEC] = "HS" ,
[OMAP2_DEVICE_TYPE_GP] = "GP" ,
[OMAP2_DEVICE_TYPE_BAD] = "BAD" ,
};
static const char * __init omap_get_family(void )
{
if (soc_is_omap24xx())
return kasprintf(GFP_KERNEL, "OMAP2" );
else if (soc_is_omap34xx())
return kasprintf(GFP_KERNEL, "OMAP3" );
else if (soc_is_omap44xx())
return kasprintf(GFP_KERNEL, "OMAP4" );
else if (soc_is_omap54xx())
return kasprintf(GFP_KERNEL, "OMAP5" );
else if (soc_is_am33xx() || soc_is_am335x())
return kasprintf(GFP_KERNEL, "AM33xx" );
else if (soc_is_am43xx())
return kasprintf(GFP_KERNEL, "AM43xx" );
else if (soc_is_dra7xx())
return kasprintf(GFP_KERNEL, "DRA7" );
else
return kasprintf(GFP_KERNEL, "Unknown" );
}
static ssize_t
type_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n" , omap_types[omap_type()]);
}
static DEVICE_ATTR_RO(type);
static struct attribute *omap_soc_attrs[] = {
&dev_attr_type.attr,
NULL
};
ATTRIBUTE_GROUPS(omap_soc);
void __init omap_soc_device_init(void )
{
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
soc_dev_attr = kzalloc(sizeof (*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return ;
soc_dev_attr->machine = soc_name;
soc_dev_attr->family = omap_get_family();
if (!soc_dev_attr->family) {
kfree(soc_dev_attr);
return ;
}
soc_dev_attr->revision = soc_rev;
soc_dev_attr->custom_attr_group = omap_soc_groups[0 ];
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->family);
kfree(soc_dev_attr);
return ;
}
}
#endif /* CONFIG_SOC_BUS */
Messung V0.5 in Prozent C=94 H=93 G=93
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-08)
¤
*© Formatika GbR, Deutschland